We have done a lot of these heads we also get them bare and put good parts in them and have never had a problem with them Now I'm not telling you that they are the best head out there if so you couldn't buy them for the price they are .
But on the same hand if a shop checks them and put's good parts in them they are worth the money .
also it depends on what you are trying to do with them like anything else build them and use them for what they are intended for .
They will work fine for the street and mild race engine's as long as you use good parts in them.
That's just my opinion of course and i have sold plenty of them with no issue's